It looks to me like this faction is doing some stupid crap with bases on worldmap visible for people being added as friends..people who don't want that.
It looks to me like using game mechanics in order to prevent others from playing the game properly (especially if they have bases/tents in the same places as this worldmap "art").
I suggest you to stop that activity and fix the damage done. You have 24 hours for that, if I still receive reports later about it then I will take some of my free time to investigate, and I usually strike hard when I have to invest my time against something totally pointless.